A Differential Broadband Communications Scheme with  MultipleRelay Cooperation

doi:10.13190/jbupt.201104.51.limzh

JOURNAL OF BEIJING UNIVERSITY OF POSTS AND TELECOM ›› 2011, Vol. 34 ›› Issue (4): 51-55.doi: 10.13190/jbupt.201104.51.limzh

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A Differential Broadband Communications Scheme with  MultipleRelay Cooperation

Received:2010-08-27 Revised:2011-04-22 Online:2011-08-28 Published:2011-07-18

Abstract

Abstract:

A differential transmit scheme based on multiplerelay cooperating is proposed in broadband communication environment. By exploiting several technologies including differential unitary modulation, amplifyandforward and maximum ratio combining, the scheme can acquire full spatial and frequency diversity gains in the manner of decoupling. Compared to the differential spacefrequency block codes, the proposed scheme not only reduces coding and decoding complexity but also easyly adjusts diversity gain. In addition, it can acquire higher spatial and frequency diversity gains with the same relay node numbers and block length. Simulation consists with theoretical analysis.

Key words: cooperative communication, differential unitary modulation, diversity gain;block coding

CLC Number:

TN911
3

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A Differential Broadband Communications Scheme with  MultipleRelay Cooperation

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